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Three Identical Coins Are Tossed Together. What is the Probability of Obtaining: Exactly Two Heads? - Mathematics

Sum

Three identical coins are tossed together. What is the probability of obtaining:
exactly two heads?

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Solution

Total outcomes = 8

i.e. (H,H,H),(H,H,T),(H,T,H),(T,T,T),(T,H,H),(T,T,H),(H,T,T),(T,H,T)

Favourable outcome = 3 (H,H,T) , (H,T,H) , (T,H,H)

∴ P(E) = `3/8`

Concept: Basic Ideas of Probability
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 23 Probability
Exercise 23 | Q 12.2 | Page 259
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